Choice of nitrogen fertilizer affects grain yield and agronomic nitrogen use efficiency of wheat cultivars |
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| Authors: | Mubshar Hussain Rana Qaisar Abbas Muhammad Faizan Ashraf Muhammad Shahzad Muhammad Farooq |
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| Institution: | 1. Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan;2. mubahsiragr@gmail.com sardaralam@uaf.edu.pk;3. Department of Agronomy, University of Agriculture, Faisalabad, Pakistan;4. University College of Agriculture &5. Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur;6. Department of Crop Sciences College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud 123, Oman |
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| Abstract: | AbstractNitrogen use efficiency (NUE) is low in cereals especially in wheat. Different wheat cultivars may vary in NUE due to inherited biological nitrification inhibition (BNI) potential. In this study, three wheat cultivars (Punjab-2011, ARRI-2011 and Millat-2011) were fertilized at the rate of 140?kg ha?1 with three N sources nitrophos (NP), urea and calcium ammonium nitrate (CAN)]. The soil nitrate (NO3?)-N contents were significantly enhanced coupled with simultaneous decrease in ammonium (NH4+)-N contents in the rhizosphere of cultivar Punjab-2011, fertilized with NP; however, cultivar Millat-2011 receiving urea behaved in contrast. Wheat cultivar Punjab-2011 fertilized with NP had the highest grain yield and agronomic NUE than other treatments due to significant increase in chlorophyl contents, allometric and yield parameters. The highest net benefit was recorded from the cultivar Punjab-2011 fertilized with CAN. In conclusion, use of NP in Punjab-2011 enhanced the grain yield and agronomic NUE. |
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| Keywords: | Allometry biological nitrification inhibition wheat cultivars nitrogen source grain yield |
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